Which preposition to use with mountainous

in Occurrences 9%

The western portion, bordering upon Idaho, is much more mountainous in character.

than Occurrences 4%

Along the southern side of the Plateau ran another ridge, less mountainous than the ridge to the north, and completely in our possession.

on Occurrences 2%

We flew along with a brilliant blue sky overhead, high hills which presently grew mountainous on either side, and what seemed an endless sea of greenish drab scrub before.

before Occurrences 1%

But in the afternoon he came into the open and saw in the midst of The Land Where No Man Goeth the fortress of Gaznak, mountainous before him, little more than a mile away.

for Occurrences 1%

Having a territory too small and mountainous for a population already overflowing and constantly on the increase, Italy had been unable to exploit the limited resources of her subsoil and had been forced to build up her industries in conditions far less favourable than those of other countries.

with Occurrences 1%

Ichtharion: It is mountainous with houses: there are no flowers there.

Which preposition to use with  mountainous